Antirecoil device for explosive-engines.



PATENTBD' MAR. 26, 1907.

D. REIMERS.- a ANTIRBGOIL DEVICE POR-EXPLOSIVE ENGINES.

APPLIOA'I'IOH FILED 10 25, 1905.

UNITED STATES PATENT oFFIoE.

Drum n. REIMERS, OF, CHICAGO, itLiNoIs, ASSIGNOR or ONE-HALF TO FREDBIFFAR, or OAK PARK, ILLINOIS.

ANTIRECOIL DEVICE FOR EXPLOSIVE-ENGINYES.

Specification of Letters Patent.

Patented March 26, 1907.

. Application filed November 25,1906. Serial No. 289,031.

To all whom it may concern.

Beit known that I, DYOKE H. REIMERS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Antirecoil De vices forEX- plbsive-Engines, of which the following is a specification.

As is well known, in starting explosive-engines, especially those of thetype used. on automobiles, acrank-handle is a plied to the crank-shaftin order to give sai shaft a few turns, thus setting; the piston inmotion. In this eration the explosion often occurs" before t e crank-arm.to which the piston is connected passes the center, thus causing areverse or recoil movement of the crankshaft, which frequently resultsin serious injuries to the operator,

It is therefore-the principal object of {this invention to providesimple and efiic'ent means for preventing the recoil or reverse movementor what is familiarly termed the kick back of the crank-shaft, which ismore especially intended for use on hydrocarbon-engines of theclass'used on automobiles, .but which is applicable to engines of othertypes andthose employed for other purposes and it consists in certainpeculiarities of the construction, novel arrangement, and operation ofthe various arts thereof, as will-be hereinafter more ful y set forthand specifically claimed.

In order to enable others skilled in the art to which my inventionpertains to make and use the same, I will now proceed todescribe it,referring to the accompanying drawings, in which Figure 1 is a of thecrank-casing of an engine, showing my antirecoil device mounted on thecrank-shaft.

Fig. 2 is a view in side elevation thereof. Fig. 3 is an end View; andFig. 4 is a view, partly in. section and partly in elevation, of theouter or free ortion of the crank-shaft,

. showin the ban e for starting the same in place t ereon andillustrating a portion of the improved device.

Like numerals of reference refer to corresponding parts throughout thedifferent views of the drawings.

The reference-numeral 10 designates a portion of the crank-casing of anengine, which casing has on its outer. surface an apertured thedrawings.

perspective view of a portion boss 11, in which the crankshaft-12 isjournalecl. The free end of the crank-shaft 12 is provided with aclutch-face 13 to engage a similar face 14 on the crank-handle 15 usedfor starting the engine. Surrounding that portion of the crank-shaftadjacent tothe outer surface of the boss 1 1 is a ring-like plate 16,which has an upwardly -inclinedarm 17, near the outer end of which ispivotally secured apawl 18-, which is adapted to engage the test 1' of aratchet-wheel 19, which is rigidly secured on the crank-shaft outwardly,but by preference resting against the plate 16, which. in turn restsagainst the outer surface of the, boss 11, as is clearly shown in thedifferent views of Secured at one of its ends to the casing 10 or to astationary part near the crank-shaft is a bracket 20, which extends inparallelism with the crank-shaft and has its outer portion turned towardthe same, asis clearly shown in-Figs. 1 and 2 of the drawings. Thisbracket has a transverse arm 21, which 'ex'tendstoward the crank-shaftand may be connected to the plate 16, thus supporting the outer portionof the bracket. Fulcrumed on the outerend of the bracket is a lever 22,the outer end of which is downwardly and inwardly inclined, as at 23,and has near said inclined portion an enlargement 24, in the lowerportion of which is seated an antifriction-ball 25. The inner portion ofthe lever 22 is bent laterally and then inwardly, so as to project underand beyond the pawl 18, so as to strike a pin or stop 26, secured to theface of the boss 11 for the purpose of restricting the movement of theinner end of said lever. Secured at one of its ends tothe bracket 20 andat'its other .end to the lever 22 is a spring 27, which will normallyhold the inner portion of the lever in such a position as to raise thepawl 18 and hold it out of engagement with the'ratchet-wheel 19 on thecrank-shaft.

The operation of the device is simple and as follows: When it is desiredto start the engine, a crank-handle 15, having in its head 28 a clutch 14 to engage the clutch 13 on the crank-shaft, is placed on said shaft,in which operation the forward or free portion of the head 28 willimpinge the beveled portion 23 of the lever 22, and thus cause the outerend of said lever to be elevated and its inner end depressed, thuspermitting the pawl 18 to engage one of the teeth of the ratchet-wheel,

which, it is apparent, will prevent the backward movement of thecrank-shaft, yet will allow it to be freely turned inthe properdire'ction for starting the engine.

having thus described my invention, I desir to be understood that I donot wish to be limited to the exact construction and arra ogement of theparts herein disclosed, as-it is obvious that various changes thereinmay be made without departing from the spirit of my invention.

What Iclaim is- 7 1 The combination with the crank-shaft of an engine,of a ratchet-wheel mounted thereon,- a pawl to engage said wheel,'alever extending near the shaft and adapted at one-of I its ends toengage the pawl and having its other end downwardly and inwardlyinclined and position to be engaged and raised by theapplic'ation oi astarting-crank, 'substan- 2o shaft, 'a pawl to engage the ratchet-wheel,a 2 5 lever extending near the shaft and adapted at one of its ends toengagethe pawl and having its other end inwardly. and downwardlyinclined, and in position *to' be en-- gaged and raised 'by theapplication of a 0 starting-crankhavin a clutch face to engage the outerend 0 the crank-shaft, sub.- stantially. as described,

DYGKE .REIMERS.

Witnesses M: A. NYMA'N; CnAs C TILLMAN. v

